Review on Elcoho Waterproof Junction Compatible Electronic by David Edwards

. The mounting holes on the board are for 4-20 1/4 screws. Each screw (single) attachment is 3.5 mm from the side walls and has a height of 5 mm. When designing a PCB, the optimal size is 55mm x 95mm. The corners of the case are rounded rather than square, requiring your PCB to be rounded or cut at a 45 degree angle. Electrical components must not be higher than 15 mm when you want to close the cover. Wall thickness 2mm. As others have said, they are not "waterproof". No O-ring, no gasket of any kind. All in all, these are good housing prototypes.